no it is not illegal but is good to check first
It depends. If the use is fraudulent then yes it is. However an email address may just be a title, such as sales@ or maintenance@
yahoo user-name and E-mail addresse are the same
iMessage is using your email address because you probably signed up with them or one of your friends gave them your email address.
Yes, it is doable. Even more there are some illegal websites offering such services.
If you're using someone elses e-mail adress for playing games online then I would say yes I would say that is illegal, but if you use your own e-mail adress to play games online that that wouldn't be a problem.
Using a Phishing site to get someones email And Pass
Threats can be illegal. This would not be a safe thing to do and could lead to criminal prosecution.
You can find an IP address in Windows Live hotmail by going into full view mode. Once you are in full view mode you will then right click on the email and select view source.
First, you need to create an account on Carfax using your email address, then you should be able to login. Carfax is a website that shows someones vehicle reports in a used cars.
Find out someones IP address type it into the IP address bar and hit type in your message and hit send (if your using Gmail)
By using a cookie
When using go-daddy for a new company, why not integrate your email address. It is now possible to use your own email as a domain name for your new site!